Sadly no. Though were I a cow my ability to type with hooves would be impressive in of itself, setting aside of course the higher thought processes that would imply.

Also, as you can see to the left there I listed myself as a male. This would mean that I would be a bull, and not a cow. Unless of course I was a cow masquerading online as a bull. Or perhaps I made a mistake setting up my profile which would be forgivable in light of the hooves and all.